<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    let id = prompt("请输入您的账号名")
    let password = +prompt("请输入您的密码")
    if (id === 'admin' && password === 123456) {
      document.write("登录成功")
    } else {
      document.write("账号名或密码错误")
    }
  </script>
</body>

</html>